頭S梁忆 2010年10月
现代地质 CEOSCIENCE
Vol. 24No. 5 Orct.2010
陆相断陷盆地深部碎屑岩成岩演化及控制因素：
以东营断陷盆地古近系孔店组为例
谭先锋"2，田景春"，林小兵"，张守鹏3
(1.成都尾上大学油气地质及开发工程国家重点安验室，四川成部610059；2.重庆科技学院石油与天热气1翟学院，重庆404331；
3.胜利油田地质科学研究院，山东东营257015）
摘要：通过岩石薄片、扫描电镜、镜质体反射率、X衍射、物性分析等资料，对东营断陷盆地古近系孔店组成岩演化及控制因系进行详细研究。研究结果表明：东营断陷盆地孔店组典型成岩现象有强烈压实作用、硬石高股结、多期次碳酸盐胶结、多期次粘十矿物胶结、硅质强烈胶结、矿物强烈穿插交代、碎屑颗粒和胶结物的溶解作用；其中，压实作用是引起深部碎屑岩强烈致密化的主要原因；硬石旁胶结、碳酸盐胶结、硅质胶结是引起致密化的又一重要原因；长石、碳酸盐胶结物的落解作用是引起该地区储层改善的主要成岩因素；成岩演化经历了准同生期-中成岩B期，部分达到晚成岩期的演化过程，成岩演化过程控制了深部碎屑岩孔隙演化；并推断原始干旱-半干旱沉积环境、基准面变化、深埋藏环境、构造-岩浆活动是控制成岩及孔隙演化的主要因索。
关键词：深部碎屑岩；成岩矿物；成岩演化；控制因素；孔店组；断陷湖盆；东营
中图分类号：TE122.2
文献标志码：A
文章编号：10008527(2010)050934-11
DiageneticEvolutionandControllingFactorsofDeep-seatedClasticRocks in Terrestrial Fault-depressed Basin: Taking the Kongdian Formation
ofDongyingFault-depressedBasinforExample TAN Xian-feng"-, TIAN Jing-chun', LIN Xiao-bin', ZHANG Shou-peng
(1. Stale Key Laboratory for Oil and Gas Reeoir Geology and Exploilation, Chengdu Uniersity of Technology, Chengdu
Sichuan 610059, China; 2. Chongqing Unitersily of Science and Technology, Chongging 404331, China;
3. Geologic Scienuijfic Research Insitute of Shengli Oijield, Dongying, Shandong 257015, China)
Abstract: Based on the analysis of thin-section analysis, scan electricity microscope observation, vitrinite re flectance, X-diffraction and physical quality analysis, the diagenetic evolution and controlling factors of Kongdi-an Formation in Dongying sag have been detailly researched. It is indicated that the typical diagenetic phenome-non include the intensive compaction, anhydrite cementation, multiperiod carborate cementation, multiperiod clay minerals cementation, intensive siliceous cement, intensively interpenetration replacement between miner-als, solution of clastic and cementation. The conclusion has been verified that compaction is the main cause of high pyknosis of the deep-seated clastic rocks, another cause is the cementation of anhydrite, carborate and sili-ceous. Solution of feldspar and carbonate cementation are the main diagenetic cause of improving the reservoir. Diagenetic evolution experiences the penecontemporaneous-middle diagenetic stage B, part of it reaches the late diagenetic stage. The diagenetic evolution controls the pore evolution. It has been discussed that aridity-semiar-id depositional environment, locating surface variation, deep-burial, and tectonic-magma activity are the key factors of controlling the diagenetic evolution and pore evolution.
收稿日期：2010-04-07；改回日期：2010-05-20；责任编辑：孙义格。
基金项目：重庆市白然科学基金项H（CSTC2009BB7383）；中国i化重点科技攻关项目(20070300187)。作者简介：谅先锋，男，讲师，博士研究生，1982年出生，况积学专业，主要从事流积地质学研究。
Email; xianfengian8299@ 163. comg